Walking/Biking at night

I live in a rural-ish area, and always there are morons walking or biking along the road or highway, dressed in all black, no reflective clothing. Stop it! Stop channeling your inner goth or angsty teen! I nearly turned some idiot into a hood ornament tonight because I came around a curve doing the speed limit of 45 and he's completely in dark clothes on some junk bike in the middle of the road. I had to swerve to miss him right before an oncoming car. Looked behind me and he had a little headlight on front of bike, does not help whatsoever from behind. Stop that! What is wrong with you people!? If I had someone tailgating me because that's what we do here in the Ozarks, that man would be road pizza.